作者:Tomoki Takeuchi、Shinya Oishi、Masato Kaneda、Ryosuke Misu、Hiroaki Ohno、Jun-ichi Sawada、Akira Asai、Shinya Nakamura、Isao Nakanishi、Nobutaka Fujii
DOI:10.1016/j.bmc.2014.04.008
日期:2014.6
Structure-activity relationship studies of diaryl amine-type KSP inhibitors were carried out. Diaryl amine derivatives with a pyridine ring or urea group were less active when compared with the parent carboline and carbazole derivatives. Optimization studies of a lactam-fused diphenylamine-type KSP inhibitor revealed that the aniline NH group and 3-CF3 phenyl group were indispensable for potent KSP inhibition. Modification with a seven-membered lactam-fused phenyl group and a 4-(trifluoromethyl)pyridin-2-yl group improved aqueous solubility while maintaining potent KSP inhibitory activity. From these studies, we identified novel diaryl amine-type KSP inhibitors with a favorable balance of potency and solubility. (C) 2014 Elsevier Ltd. All rights reserved.